The invention contemplates the preshaping of a flexible precut piece of vinyl or other flexible plastic, and further processing such piece to form a stiffened preshaped assembly. The stiffened preshaped assembly is formed by placing the vinyl or other plastic material about a male mold or die. The plastic...http://www.google.fr/patents/US4029532?utm_source=gb-gplus-shareBrevet US4029532 - Method of preshaping and installing car plastic top
Method of preshaping and installing car plastic top
